1220211220194 has 12 divisors (see below), whose sum is σ = 2643790977126. Its totient is φ = 406737073392.

The previous prime is 1220211220187. The next prime is 1220211220201. The reversal of 1220211220194 is 4910221120221.

1220211220194 is a `hidden beast` number, since 1 + 220 + 211 + 220 + 1 + 9 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (1220211220187) and next prime (1220211220201).

It can be written as a sum of positive squares in only one way, i.e., 1090781804025 + 129429416169 = 1044405^2 + 359763^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 33894756099 + ... + 33894756134.

Almost surely, 2^{1220211220194} is an apocalyptic number.

1220211220194 is an abundant number, since it is smaller than the sum of its proper divisors (1423579756932).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1220211220194 is a wasteful number, since it uses less digits than its factorization.

1220211220194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67789512241 (or 67789512238 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The spelling of 1220211220194 in words is "one trillion, two hundred twenty billion, two hundred eleven million, two hundred twenty thousand, one hundred ninety-four".